![[Drilling at store quarry site]](https://cache.getarchive.net/Prod/thumb/cdn4/L3Bob3RvLzE5MDAvMDEvMDEvZHJpbGxpbmctYXQtc3RvcmUtcXVhcnJ5LXNpdGUtMTAyNC5qcGc%3D/40/31/webp "[Drilling at store quarry site]")
[Drilling at store quarry site]
Picryl description: Public domain image of a quarry, mine, excavation, or mining site, free to use, no copyright restrictions.
Town of Mount Union, Near U.S. Highway 522, Mount Union, Huntingdon Co...
See also HABS PA-5973 for related information. Significance: For the first half of the 20th century, Mt. Union was a center of refractory brick manufacture. Three brick plants were built early in the century an... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Eli Whitney Armory, Forge Building, Mill River, Hamden, New Haven Coun...
Significance: An important part of Whitney's early manufacturing process. Archeological excavation of this building revealed the early water-power system, several original forge bases, and two large machinery ... More
Lockport Historic District, Bounded by Eighth, Hamilton & Eleventh Str...
Significance: The Village of Lockport was first established in 1836 by the surveyors of the Illinois and Michigan Canal to serve as field headquarters and as a supply point. As the 19th century progressed, Loc... More
Lockport Historic District, Bounded by Eighth, Hamilton & Eleventh Str...
Significance: The Village of Lockport was first established in 1836 by the surveyors of the Illinois and Michigan Canal to serve as field headquarters and as a supply point. As the 19th century progressed, Loc... More
Annisquam Bridge, Spanning Lobster Cove between Washington & River Str...
Significance: The Annisquam Bridge is a wood-pile and timber-stringer highway bridge, 443 feet in length and 26 feet in width. Although it was the most common type of bridge over wide bodies of water throughou... More
Annisquam Bridge, Spanning Lobster Cove between Washington & River Str...
Significance: The Annisquam Bridge is a wood-pile and timber-stringer highway bridge, 443 feet in length and 26 feet in width. Although it was the most common type of bridge over wide bodies of water throughou... More
![Quarry Scenes. No children were employed. Location: Warren County--Bowling Green [vicinity], Kentucky / Lewis W. Hine.](https://cache.getarchive.net/Prod/thumb/cdn4/L3Bob3RvLzE5MTYvMDEvMDEvcXVhcnJ5LXNjZW5lcy1uby1jaGlsZHJlbi13ZXJlLWVtcGxveWVkLWxvY2F0aW9uLXdhcnJlbi1jb3VudHktYm93bGluZy1ncmVlbi0xLTEwMjQuanBn/40/28/webp "Quarry Scenes. No children were employed. Location: Warren County--Bowling Green [vicinity], Kentucky / Lewis W. Hine.")
Quarry Scenes. No children were employed. Location: Warren County--Bo...
Picryl description: Public domain image of a quarry, excavation or mining site, free to use, no copyright restrictions.
Town of Mount Union, Near U.S. Highway 522, Mount Union, Huntingdon Co...
See also HABS PA-5973 for related information. Significance: For the first half of the 20th century, Mt. Union was a center of refractory brick manufacture. Three brick plants were built early in the century an... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Niantic River Swing Bridge, Spanning Niantic River between East Lyme &...
Significance: The Niantic River Bridge has two spans: a fixed Pratt through truss and the swing span which resembles a Warren through truss with verticals. All members and all connections are riveted. Survey ... More
Lockport Historic District, Bounded by Eighth, Hamilton & Eleventh Str...
Significance: The Village of Lockport was first established in 1836 by the surveyors of the Illinois and Michigan Canal to serve as field headquarters and as a supply point. As the 19th century progressed, Loc... More
Lockport Historic District, Bounded by Eighth, Hamilton & Eleventh Str...
Significance: The Village of Lockport was first established in 1836 by the surveyors of the Illinois and Michigan Canal to serve as field headquarters and as a supply point. As the 19th century progressed, Loc... More
Assouan (Syène) - carrières de granit - ancien systeme d'extraction / ...
General view of ancient granite quarry, Aswān, Egypt. Illus. in: Égypte et Nubie : sites et monuments les plus intéressants pour l'étude de l'art et de l'histoire / Félix Teynard. Paris : Goupil et Cie, [1858],... More
Fairfax Quarries Incorporated. Building materials on support, with tru...
Public domain image of an industrial building, factory, structure, works, 19th-20th century industrial revolution, free to use, no copyright restrictions - Picryl description
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Annisquam Bridge, Spanning Lobster Cove between Washington & River Str...
Significance: The Annisquam Bridge is a wood-pile and timber-stringer highway bridge, 443 feet in length and 26 feet in width. Although it was the most common type of bridge over wide bodies of water throughou... More
Kardâcy - sanctuaire, niches et inscriptions taillées dans les carrièr...
General view of sanctuary, niches, and inscriptions at the quarries in Qertassi, Egypt. Illus. in: Égypte et Nubie : sites et monuments les plus intéressants pour l'étude de l'art et de l'histoire / Félix Teyna... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Niantic River Swing Bridge, Spanning Niantic River between East Lyme &...
Significance: The Niantic River Bridge has two spans: a fixed Pratt through truss and the swing span which resembles a Warren through truss with verticals. All members and all connections are riveted. Survey ... More
Lockport Historic District, Bounded by Eighth, Hamilton & Eleventh Str...
Significance: The Village of Lockport was first established in 1836 by the surveyors of the Illinois and Michigan Canal to serve as field headquarters and as a supply point. As the 19th century progressed, Loc... More
Annisquam Bridge, Spanning Lobster Cove between Washington & River Str...
Significance: The Annisquam Bridge is a wood-pile and timber-stringer highway bridge, 443 feet in length and 26 feet in width. Although it was the most common type of bridge over wide bodies of water throughou... More
Annisquam Bridge, Spanning Lobster Cove between Washington & River Str...
Significance: The Annisquam Bridge is a wood-pile and timber-stringer highway bridge, 443 feet in length and 26 feet in width. Although it was the most common type of bridge over wide bodies of water throughou... More
Town of Mount Union, Near U.S. Highway 522, Mount Union, Huntingdon Co...
See also HABS PA-5973 for related information. Significance: For the first half of the 20th century, Mt. Union was a center of refractory brick manufacture. Three brick plants were built early in the century an... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Niantic River Swing Bridge, Spanning Niantic River between East Lyme &...
Significance: The Niantic River Bridge has two spans: a fixed Pratt through truss and the swing span which resembles a Warren through truss with verticals. All members and all connections are riveted. Survey ... More
Niantic River Swing Bridge, Spanning Niantic River between East Lyme &...
Significance: The Niantic River Bridge has two spans: a fixed Pratt through truss and the swing span which resembles a Warren through truss with verticals. All members and all connections are riveted. Survey ... More
Niantic River Swing Bridge, Spanning Niantic River between East Lyme &...
Significance: The Niantic River Bridge has two spans: a fixed Pratt through truss and the swing span which resembles a Warren through truss with verticals. All members and all connections are riveted. Survey ... More
Lockport Historic District, Bounded by Eighth, Hamilton & Eleventh Str...
Significance: The Village of Lockport was first established in 1836 by the surveyors of the Illinois and Michigan Canal to serve as field headquarters and as a supply point. As the 19th century progressed, Loc... More
Lockport Historic District, Bounded by Eighth, Hamilton & Eleventh Str...
Significance: The Village of Lockport was first established in 1836 by the surveyors of the Illinois and Michigan Canal to serve as field headquarters and as a supply point. As the 19th century progressed, Loc... More
Annisquam Bridge, Spanning Lobster Cove between Washington & River Str...
Significance: The Annisquam Bridge is a wood-pile and timber-stringer highway bridge, 443 feet in length and 26 feet in width. Although it was the most common type of bridge over wide bodies of water throughou... More
Annisquam Bridge, Spanning Lobster Cove between Washington & River Str...
Significance: The Annisquam Bridge is a wood-pile and timber-stringer highway bridge, 443 feet in length and 26 feet in width. Although it was the most common type of bridge over wide bodies of water throughou... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Niantic River Swing Bridge, Spanning Niantic River between East Lyme &...
Significance: The Niantic River Bridge has two spans: a fixed Pratt through truss and the swing span which resembles a Warren through truss with verticals. All members and all connections are riveted. Survey ... More
Niantic River Swing Bridge, Spanning Niantic River between East Lyme &...
Significance: The Niantic River Bridge has two spans: a fixed Pratt through truss and the swing span which resembles a Warren through truss with verticals. All members and all connections are riveted. Survey ... More
Lockport Historic District, Bounded by Eighth, Hamilton & Eleventh Str...
Significance: The Village of Lockport was first established in 1836 by the surveyors of the Illinois and Michigan Canal to serve as field headquarters and as a supply point. As the 19th century progressed, Loc... More
Lockport Historic District, Bounded by Eighth, Hamilton & Eleventh Str...
Significance: The Village of Lockport was first established in 1836 by the surveyors of the Illinois and Michigan Canal to serve as field headquarters and as a supply point. As the 19th century progressed, Loc... More
Lockport Historic District, Bounded by Eighth, Hamilton & Eleventh Str...
Significance: The Village of Lockport was first established in 1836 by the surveyors of the Illinois and Michigan Canal to serve as field headquarters and as a supply point. As the 19th century progressed, Loc... More
Lockport Historic District, Bounded by Eighth, Hamilton & Eleventh Str...
Significance: The Village of Lockport was first established in 1836 by the surveyors of the Illinois and Michigan Canal to serve as field headquarters and as a supply point. As the 19th century progressed, Loc... More
Annisquam Bridge, Spanning Lobster Cove between Washington & River Str...
Significance: The Annisquam Bridge is a wood-pile and timber-stringer highway bridge, 443 feet in length and 26 feet in width. Although it was the most common type of bridge over wide bodies of water throughou... More
Annisquam Bridge, Spanning Lobster Cove between Washington & River Str...
Significance: The Annisquam Bridge is a wood-pile and timber-stringer highway bridge, 443 feet in length and 26 feet in width. Although it was the most common type of bridge over wide bodies of water throughou... More
Sergei Prokudin Gorskiy, Karʹer okolo stant︠s︡īi Kannesemga Kiappeselg...
Correct geographic identification provided by O-J Paloneva. Kappeselga is, by road, approximately 767 km. north of Kondopoga. Credit line: Prokudin-Gorskiĭ photograph collection, Library of Congress, Prints and... More
Town of Mount Union, Near U.S. Highway 522, Mount Union, Huntingdon Co...
See also HABS PA-5973 for related information. Significance: For the first half of the 20th century, Mt. Union was a center of refractory brick manufacture. Three brick plants were built early in the century an... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Eli Whitney Armory, Forge Building, Mill River, Hamden, New Haven Coun...
Significance: An important part of Whitney's early manufacturing process. Archeological excavation of this building revealed the early water-power system, several original forge bases, and two large machinery ... More
Niantic River Swing Bridge, Spanning Niantic River between East Lyme &...
Significance: The Niantic River Bridge has two spans: a fixed Pratt through truss and the swing span which resembles a Warren through truss with verticals. All members and all connections are riveted. Survey ... More
Niantic River Swing Bridge, Spanning Niantic River between East Lyme &...
Significance: The Niantic River Bridge has two spans: a fixed Pratt through truss and the swing span which resembles a Warren through truss with verticals. All members and all connections are riveted. Survey ... More
Lockport Historic District, Bounded by Eighth, Hamilton & Eleventh Str...
Significance: The Village of Lockport was first established in 1836 by the surveyors of the Illinois and Michigan Canal to serve as field headquarters and as a supply point. As the 19th century progressed, Loc... More
Lockport Historic District, Bounded by Eighth, Hamilton & Eleventh Str...
Significance: The Village of Lockport was first established in 1836 by the surveyors of the Illinois and Michigan Canal to serve as field headquarters and as a supply point. As the 19th century progressed, Loc... More
Lockport Historic District, Bounded by Eighth, Hamilton & Eleventh Str...
Significance: The Village of Lockport was first established in 1836 by the surveyors of the Illinois and Michigan Canal to serve as field headquarters and as a supply point. As the 19th century progressed, Loc... More
Fairfax Quarries Incorporated. Quarry office II
Picryl description: Public domain vintage artistic photograph, free to use, no copyright restrictions image.
Town of Mount Union, Near U.S. Highway 522, Mount Union, Huntingdon Co...
See also HABS PA-5973 for related information. Significance: For the first half of the 20th century, Mt. Union was a center of refractory brick manufacture. Three brick plants were built early in the century an... More
Town of Mount Union, Near U.S. Highway 522, Mount Union, Huntingdon Co...
See also HABS PA-5973 for related information. Significance: For the first half of the 20th century, Mt. Union was a center of refractory brick manufacture. Three brick plants were built early in the century an... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
The great stone quarries, Hong Kong, China
H24544 U.S. Copyright Office. Copyright by C.H. Graves. On mount: The Universal Photo Art Co. No. 138.
Town of Mount Union, Near U.S. Highway 522, Mount Union, Huntingdon Co...
See also HABS PA-5973 for related information. Significance: For the first half of the 20th century, Mt. Union was a center of refractory brick manufacture. Three brick plants were built early in the century an... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ
Significance: Originally built as a depot for the storage of powder and other armaments, in the 20th century Picatinny Arsenal became a leading facility for the research and development and production of muniti... More
Niantic River Swing Bridge, Spanning Niantic River between East Lyme &...
Significance: The Niantic River Bridge has two spans: a fixed Pratt through truss and the swing span which resembles a Warren through truss with verticals. All members and all connections are riveted. Survey ... More